import java.util.Calendar;
import java.util.Date;

public class Main {
    public static void main(String[] args) {
//        Date date = new Date();
//        System.out.println(date);
//        Calendar cal = Calendar.getInstance();
//        cal.setTime(date);
//        cal.set(Calendar.HOUR_OF_DAY, 23);
//        cal.set(Calendar.MINUTE, 59);
//        cal.set(Calendar.SECOND, 59);
//        System.out.println(cal.getTime());
//        System.out.println(cal.getTime().getClass());
        String[] strings=new String[]{};
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append("1001").append(",");
        stringBuilder.append("1002").append(",");
        stringBuilder.append("1003").append(",");
        stringBuilder.deleteCharAt(stringBuilder.length()-1);
        System.out.println(stringBuilder);
    }
}
